Hey guys just a quick question.

My humidity in my grow room is at 50%, how do i raise this? as i read it needs to be between 70-80% during veg.

thanks in advance all

a bowl of water in your grow room can help.....or one of them spray gun things..and mist the air with water...just be careful when spraying you dont wanna get a electric shock

ok thanks for the reply mate, i just added a bowl of water now ill check in a bit and c if the humidity has gone up thanks.

What are you using to measure the humidity ??

i digital reader cost me £20

get a mini fogger from maplins for about 12 quid

Or soak a towel under water then ring it out, lay/hang in room!

thanks for the replys all, i cannot go to maplins as im not from the uk, i live in a remote area somewhere.

Getting a hps light was hard enough.

Anyway i shall try the towel method and hope it works.

Too low a humidity is normally a sign that your intake is inadequate, as background humidity in the UK is around the 75% mark, I believe.

good to know, I finally got one of them thar digi humidity/thermometer thingies also,, turns out I have zero humidity in my room hehe, might explain my slow vegging since I put my RVK on, will try some of the above,, good posts y'all ty

Or alternatively go to your nearest Maplins and buy a humidifier that you can set, it then keeps your humidity costant!

Nav

im not in the uk mate i already said that. im in a remote area of europe.

me too if it was aimed at me,, well im in europe but not remote.

70% Humidity surely thats too high, maybe OK for rooting cuttings but for normal vegeative growth this is a little too high. Wouldn't it allow fungal pathogens to propagate easily.

Isn't 40-60% humidity about right for Cannabis. My humidity rarely leaves this range except when peaking for a short while in the dark cycle, despite good ventilation.

You are often at the mercy of natural ambient humidities though.

In an ideal world 70% all the way through mate but its only reduced by us late in flower to help stop budrot

In fact seedlings to start with want around 80%

Owd

Ok I have tried the Bowl of water method for 2 1/2 hours,, not a drop of humidity,, double checked the hygrometer works in another room,, seems solid.
gonna maybe try the wet towel method next.
I have even turned off one of my lights to get the temp down a bit,,, Im thinking I may try the maplin thing long term,, but for the 3 weeks it takes anything to get delivered to this country so far I need to do something temporary,, so Im up for the towel thing next after I see if the light makes a difference.

Well good news maplin.co.uk ship to other countries in europe so i have a mini fogger on the way

What effects does low humidity have on cannabis plants?

fray

good news logic
Im thinking on the same lines

Fray,, my humidity has been the same for a couple of weeks I think, and I only put a hygrometer in today, the humidity doesnt even register - I get two lines instead of numbers, so I would assume that its close to zero hehe
the plants are alive and seem well really, but I'm guessing I'd have got close to 2 times as much growth in the last week or so if I had optimum humidity. Well I guess I can put it down to an unplanned experiment then. Righto off to virtual maplins then it is

Is that a Hydrogarden Thermometer and Hygrometer you've got there elduderino, I've got three of them and they always do that, I've given up with them. Two lines, wheres my humidity gone, it ain't nowhere near zero. After I put one of these things into a propagator it died within a day.

Wow I thought that was a little too wet, oh well, you learn something new everyday on here.

Owderb what is that line you are quoting under your avatar, it was "Band On The Run - Wings" the other week, wasn't it?

heh that sounds dodgy!
cheers for posting, always good to hear these things
its a Cornwall Electronics one: "Thermometer w/Hygro And Clock (max/min)" says on the pack

its also an alarm clock haha, like I could possibly hear that thing over the sound of my RVK peh!

Hmmm, so why do these things do the double dash thing then? It surely can't be down to the humidity being zero, I wonder why they do that.

Mine displays " - - ". It displays the temperature OK though.

Just tried replacing the batteries and the thing started to display the humidity again. And then after about 15 seconds it went back to " - - ". So its not the batteries.

Curiously the one I have that is in the flowering cupboard doesn't have a problem, the humidity always displays. But when ever I put them in my vegeative cupboard it displays " - - ".

I wonder if its something to do with the lighting. CFL's in Vegeative cupboard and HID in the flowering cupboard.

This ones for mulder and scully, I think. Maybe a case of buying a more higher quality hygrometer, who knows.

OHH ,
mine is the same as yours, and im having exactly the same problems...
i have another in the same room (different make) that is reading about 20%, the other one mustnt register this low.....
Im really struggling with this humidity thing
i have a fan speed/hygrometer thingy ...its set to 50%, but it just aint having it..it is just on constant..... should i turn my fan speeds right down or summat.. they are very powerful ones ....???
cheers everyone,
redgrotto

The track is "Seaside Rendezvous" off "A night at the opera" album by Queen

Owd

Mrs.EmB's favourite album at the mo.

does anyone have any top tips for the placement of foggers? Mine's on constant at the moment. Looks GREAT, makes the plants think they're in a soft rock video. Doesn't put the humidity above 30% (and I've not got the pokiest extractor in the world).

Unless my humidity meter (one of the dial types) is giving a false reading from being in direct HPS light?

cheers chaps

tom

I think you'll find Maplins deliver across Europe, there's also more than one site that delivers Europe wide mate, just takes a little bit of looking ; - )

Amazon deliver across Europe and have a selection of humidifiers!


Nav

My humidity dial is so inaccurate I've resorted to turning it to the position that I think its mean to be at.

You haven't got any Bon Jovis #11 in your grow have you, with scantily clad ladies jumping around all slippery and wet.

the bowl of water and the towel thing, sounded great in my mind - I clearly pictured a wet towel left out when I was back in UK, didnt work here in practice though and hanging a towel in the grow room might be ok in a larger room but in a tent,, its not ideal in practice tbh......the thing that actually worked most for me was to remove a light - thus dropping the temps and increasing humidity.

just spent ages looking through these things,,, I found the reality was that out of say 15 products, only 2-3 are actually applicable/affordable/deliverable/etc/etc/etc/etc/etc
the maplin thing sounds good, but from peoples experiences it doesn't put out a lot of humidity (35ish) and wont cut it really.
I found that a few of the "warm mister" types are in fact glorified kettles that suck you leccy and bubble away and are noisy to boot.
Some of the most reccommended ones, are reviewed in sites like amazon where they say the thing leaked all over the floor, err ok.
I have the additional probem of the delivery, amazon say 1-2 weeks delivery on many items, I am still waiting in the 4th week for a book from them,, many items will not be delivered outside UK, some will but will be dispatched in 4-6 weeks,,,dispatched!!! then delivered in another 4, when I will be harvesting then
I really like the look of the Honeywell one,, but £125 is going way too far for me at this point.
One thing that has become clear in this search is that, I aint buying NAYTHING that doesnt have a review from someone that has actually used it!

getting real fed up of browsing endlessly now

I have actually found someones diary here with a similair problem and grow set up, sort of, and pm'd them for a reccommendation,, thank fork! coz its like pulling teeth otherwise

Hey i know this is a thread hijack but i got a Q that is in keeping with the thread.
Right im having same prob with low humidity..25-30%, its just started to go above 35 as the plants r getting bigger, It does raise to like 70% when lights go off.

I have a 10" outlet and 8" inlet on controller set to about just under half at the mo with 2 600w lights, temp max 82f min 71f.
Im about to go 12/12 so a lowish humirity will be cool but the prob will still be there next time round. So i started to look at what i could do, i tried a wet towel and nothing, i got some bionair warm mist joby that was shit and ran out of water b4 even getting room to 30% (i could have spat all over the walls and i think that would have worked better )
And then the other day i seen this fan/humdifire...... It was about 4 or 5" thick, 10" or so square, with a mesh front but protruding from the front of the fan is a funnel, and mist is suposed to come out of that and be blown in to room by the fan, hence raising the humidity!!!!! it was about £90 but i cannot find any info or even that type of fan on the net and was wondering if anyone has this type of fan or knows much about them and if they any good???

Please shout up if u got any info as i really want to get steps in place and buy the items i might need while i still got a bit of spare cash about..

Thanks to all,

good idea i'll do that since my humidity during veg. right now is below 20% . .